Fig 
GEROULD. — Caudina, 
Figs. 6-8. 
xi 
Fig. 
9. 
10. 
PLATE 2. 
ABBREVIATIONS. 
cl. sns. Sensory cell of epithelium. 
cl, sst. Supporting cell of epithelium. 
gl. tbl. Tubular gland cell. 
Supporting cells from epithelium of tentacles. X 940, 
Sensory cell from epithelium of the tentacles. x 940. 
Tubular gland cell from the tentacles. X 940. 
Figs. 11, 11a. Muscle cells from a radial longitudinal muscle band. X 222. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 16. 
The same in a state of contraction. X 222. 
One half of a muscle fiber from the pharynx. X 360. 
Middle part of the same. x 700. 
Group of cells seen in a cross section of tentacle. X 940. 
Longitudinal section through the axial side of one of the innerjpro- 
cesses of a tentacle. X 490. 
